STI (SCON) Announces Issuance of U.S. Patent 8,290,553
AUSTIN, Texas, Dec. 4, 2012 (GLOBE NEWSWIRE) -- Superconductor Technologies Inc. (Nasdaq:SCON) ("STI"), a world leader in the development and production of high temperature superconducting (HTS) materials and associated technologies, announced the U.S. Patent and Trademark Office (USPTO) has issued a critical patent on STI's Reactive Co-Evaporation Cyclic Deposition and Reaction (RCE-CDR) device and method for fabricating HTS thin films for 2G HTS wire. The newly issued patent, U.S. Patent No. 8,290,553, is entitled "Device and Method for Fabricating Thin Films by Reactive Evaporation" and expires in 2025.
"This patent issuance represents another step forward in the execution of our intellectual property (IP) strategy in conjunction with our Conductus® 2G HTS wire development," said Jeff Quiram, STI's President and CEO. "As part of our strategy to capture market potential, we are utilizing existing IP as the foundation for the commercial development of Conductus 2G HTS wire. We will continue to focus on strengthening our global IP portfolio to support our growing market position."
In addition, the European Patent Office recently indicated that it is prepared to grant a patent on STI's optimized composition of yttrium barium copper oxide (YBCO), expanding the US Patent 7,867,950 issued January 11, 2011.
About STI's 2G HTS Wire RCE-CDR Manufacturing
Conductus® unique RCE-CDR HTS deposition offers several key advantages to successfully commercialize HTS wire for large, emerging markets. Importantly, HTS deposition using RCE-CDR requires fewer manufacturing steps than alternate deposition methods like MOD, MOCVD and PLD. Fewer steps reduce total processing time and increase the likelihood of higher yield. Conductus® highly controlled RCE-CDR deposition process grows crystalline structures from very low cost raw materials in their bulk, solid state. Other YBCO growth approaches are not as controlled and usually require the use of costly chemical mixtures to deposit HTS materials. The competing processes require more buffer layers for proper crystal growth which increases complexity and runtimes and reduces yield. Conductus® growth process is simple, repeatable and commercially proven. In addition to the lower direct cost of raw materials and the use of inexpensive substrate material, Conductus® manufacturing process will be designed for high throughput and a large HTS growth area. Fewer process steps allows for less production equipment per km of wire, which in turn translates into lower cap-ex, less electricity use and a smaller production footprint.
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